Kaplan-Meier curves illustrating the effect of CCNB2 expression on disease specific survival in breast cancer. Dashed line represents patients whose tumors over-expressed CCNB2 and solid line represents patients whose tumors did not. The p-values for the difference between the curves were calculated using log-rank test.
Shubbar et al. BMC Cancer 2013 13:1 doi:10.1186/1471-2407-13-1